Yeah, I remember a lot of singing at the beginning, I think they started singing again somewhere in the middle, and they started singing again at the end. Because it was a big ole happy ending and it had to be emphasized through song.
I couldn't find a summary of the movie anywhere else but if you want you can read about the plot on
Wikipedia. I read it over and I can now vaguely recall the movie. However, I found it to be so ridiculous that I couldn't think of the right words to use to write my own summary for it, or to even describe it.